Cougar in the city! Molly Sims joins The Carrie Diaries as older love rival who tries to steal Sebastian

SPOILER ALERT!

Carrie Bradshaw better watch her back because there is a new cougar on the prowl.

Molly Sims has been cast to play a man-hungry older woman who will be in direct competition with AnnaSophia Robb's young Carrie in trying to steal her boyfriend Sebastian played by Austin Butler.

According to E Online! the 40-year-old model is to guest star as sexy Vicky on the second season of the popular CW show who becomes intimately involved with Sebastian.

Cougar prowling: Molly Sims will appear in the new season of The Carrie Diaries playing sexy Vick who tries to steal Sebastian from Carrie - here Mollly appeared at Twilight Saga: Breaking Dawn Part 2 film premiere in Los Angeles last November

Molly is expected to appear in at least two of the Sex and the City prequel's upcoming episodes.

And she is clearly looking forward to it the former Las Vegas start tweeted: 'Love working in New York. So, so, so excited to be on The @CarrieDiariesCW!!'

Sebastian and Carrie - played by 19-year-old AnnaSophia Robb - split in the season one finale after she found out
he hooked up with her best friend Maggie (Katie Findlay) while they were
temporarily broken up.

'Relationships have a lot of ups and downs and are very complicated,'
executive producer Amy B. Harris said of the duo's relationship.

Competition: Molly will try and snare Sebastian played by Austin Butler (right) from AnnaSophia Robb's Carrie - here the couple appeared at The Carrie Diaries Premiere during the 2012 New York Television Film Festival last October

Passionate: Carrie and Sebastian have an on and off steamy affair on The Carrie Diaries

'What I
like about Carrie Bradshaw is she can make a lot out of nothing and
then sometimes, she's looking at it in just the right way. It's a
journey for her…This is a relationship I want to keep mining for as long
as I can.'

As well as appearing on Las Vegas experienced actress Molly Sims guest starred on Wedding Band and Royal Pains and appeared in films such as Yes Man and Fired Up!

When she is not acting the striking blonde - who is married to Hollywood producer Scott Stuber - looks after their adorable one-year-old son Brooks

New role: Molly has tweeted about how excited she is to be starring in the series of The Carrie Diaries - here she attends a Monc Blanc event at The Shore Hotel in Santa Monica in June

'I've always believed in the ''work hard, play hard'' motto and after working long hours for a number of weeks straight, I try to take some time off,' she wrote in an article for The Fashion Spot.

'It's important to not feel guilty about treating yourself - as mothers, we have to remember that we're doing the best we can (even if that doesn't always stop us from feeling guilty!'

The Carrie Diaries returns Friday, Oct. 25 on the CW.

Cool mother: Molly with her son Brooks at Coldwater Park in Los Angeles in August